CPC G06F 11/2284 (2013.01) [G06F 13/1668 (2013.01); G06F 13/4282 (2013.01)] | 15 Claims |
1. At least one non-transitory machine readable medium including instructions that, when executed by a first device, cause the first device to perform operations for reporting power-on self-test (POST) codes of a personal computing device via a secure digital (SD) interface, comprising:
following reception of system power, assigning a first signal connection and a second signal connection of a plurality of signal connections of said SD interface for conveyance of a general purpose input signal and conveyance of a general purpose output signal;
writing, to said first signal connection, a first write signal having a first write logic state;
reading, from said second signal connection, a first read signal having a first read logic state;
writing, to said first signal connection, a second write signal having a second write logic state;
reading, from said second signal connection, a second read signal having a second read logic state; and
responsive to a reading of said first read signal having said first read logic state equal to said first write logic state, followed by a reading of said second read signal having said second read logic state equal to said second write logic state, initiating a serial data signal to at least one of said first and second signal connections.
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